The Secret Life of Goldfish

The goldfish is the most popular aquarium fish. Goldfish come in all shapes, sizes and colors. We've probably all had one--or a few--at some point or another. And for many of us, a goldfish was our very first pet!

These fish are common in America. You can easily get these pet fish at a pet store and many people keep them in fishbowls.

But how much do you really know about caring for these small fish? Here are some interesting goldfish facts about America's third most popular household pet.

There are hundreds of different varieties of goldfish around the world, but all of them descended from a species of East Asian wild carp, Carassius auratus gibelio. Today, you'll find varieties and goldfish breeds like lionhead, bubble eye goldfish, veiltail, fancy goldfish, common goldfish and fantail fish. These special breeds are the result of selective breeding.

5. The average lifespan of a goldfish is 5-10 years.

With the right care, pet goldfish live for years. But these fish need more than a small fish bowl. A large tank or outdoor pond with clean water at an appropriate temperature goes a long way toward keeping goldfish healthy. The oldest goldfish on record lived to be over 40 years old!